Oh good info !!!

Just checked mine. 4 fins surrounding the tweeter.

I’ll get my brother to check his.

Thanks for that. That’s a real nice easy way to confirm that.

How did you find that out? An old post or something? I searched for more info on the old tweeters but can’t say I used good key words or not.

Anyway, Thankyou. !

M60ti Hafler9505 & JFET Pre,Axiom Transformer. M3 Marantz PM7200 Dual 606 Denon 2700 M2 Yammy RX595